1240472688 has 160 divisors (see below), whose sum is σ = 4071739392. Its totient is φ = 316569600.

The previous prime is 1240472663. The next prime is 1240472747. The reversal of 1240472688 is 8862740421.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130828 + ... + 139988.

Almost surely, 2^1240472688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240472688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2035869696).

1240472688 is an abundant number, since it is smaller than the sum of its proper divisors (2831266704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240472688 is a wasteful number, since it uses less digits than its factorization.

1240472688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223 (or 9217 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 1240472688 is about 35220.3448024008. The cubic root of 1240472688 is about 1074.4735660769.

The spelling of 1240472688 in words is "one billion, two hundred forty million, four hundred seventy-two thousand, six hundred eighty-eight".